Aerobic and Anaerobic Scaling in Fish

Rapid Metabolic Recovery Following Vigorous Exercise in Burrow‐Dwelling Larval Sea Lampreys(Petromyzon marinus)

“…This relationship is probably due to the greater anaerobic energy demands that larger fish are forced to contend with during burst swimming (Goolish 1991). Based on these observations, exercise-induced metabolic acid production would be expected to be greater in the much larger, freely swimming adult lampreys (mass ∼260 g) than in burrow dwelling ammocoetes (mass ∼2.7 g) that were exercised in an identical manner.…”

“…In general, metabolic acid production during anaerobic exercise positively scales with body size in active fish such as the rainbow trout (Goolish 1991;Ferguson et al 1993) and brook Kieffer et al 1996). This relationship is probably due to the greater anaerobic energy demands that larger fish are forced to contend with during burst swimming (Goolish 1991).…”

“…However, the total acid excreted over 2 h was 40% greater in ammocoetes (967 nmol g Ϫ1 body wt vs. 684 nmol g Ϫ1 body wt; Wilkie et al 1998). Thus, the allometric relationship pertaining to greater metabolic acid production in larger fish during anaerobic exercise (Goolish 1991;Ferguson et al 1993) may not apply to different stages of the lamprey life cycle. One possible explanation is that ammocoetes may have to rely heavily on anaerobic glycolysis while swimming or burrowing, which would be reflected by greater metabolic acid production and excretion.…”

“…This may be the case in ammocoetes, but high glycogen reserves may also be required to support burrowing activities. Goolish (1991) has argued that muscle glycogen concentrations increase as fish get larger because additional fuel is needed to overcome the greater drag encountered during burst or sprint swimming. Since the resistance provided by stream substrate to a burrowing ammocoete could be considerable, high glycogen stores would give ammocoetes the additional onboard fuel needed to support vigorous burrowing activity.…”

Velocidade máxima de nado e possível desdobramento para o cálculo do tempo de resistência para peixes migratórios neotropicais

“…Goolish (1991) descreveu algumas delas (potência necessária para vencer a resistência durante a velocidade de explosão, potência máxima depreendida da musculatura vermelha, e outras, todas em função do comprimento ), porém não se verificou nenhuma explicação biológica para a constante e expoente da equação (4). Yingqi (1982) encontrou a fórmula empírica que fornece o menor tempo de contração muscular em função do comprimento do peixe (para em cm) e da temperatura muscular , considerando 276 medidas de para seis espécies de peixes que variavam entre 5 < < 80 cm em temperaturas entre 2ºC < < 30ºC: Beach (1984) a transformou para em metros:…”